<title>Circuit Simulator Applet</title>
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<body>
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<applet code=Circuit.class archive=circuit.jar width=600 height=50>
Sorry, you need a Java-enabled browser to see the simulation.
<param name=pause value=20>
</applet>
<p>
This java applet is an electronic circuit simulator.<span
style="mso-spacerun: yes">&nbsp; </span>When the applet starts up you will see
an animated schematic of a simple LRC circuit.  The green
color indicates positive voltage.<span style="mso-spacerun: yes">&nbsp;
</span>The gray color indicates ground.<span style="mso-spacerun: yes">&nbsp;
</span>A red color indicates negative voltage.<span style="mso-spacerun:
yes">&nbsp; </span>The moving yellow dots indicate current.</p>

<p>To turn a switch on or off, just click on it.<span style="mso-spacerun:
yes">&nbsp; </span>If you move the mouse over any component of the circuit, you
will see a short description of that component and its current state in the
lower right corner of the window.<span style="mso-spacerun: yes">&nbsp; </span>To
modify a component,
move the mouse over it, click the right mouse button (or control-click
if you have a Mac) and select &#8220;Edit&#8221;.</p>
<p>
The "Circuits" menu contains a lot of sample circuits for you to try.
<p>
If you don't have Java, get the
<a target="_blank"
href="/cgi-bin/go.pl?http://java.sun.com/getjava/">Java plug-in</a>.
<p>
<a target="_blank" href="directions.html">Directions</a>.
<p>
<a href="e-index.html">Index of Circuit Examples</a>.
<p>
<a href="http://www.falstad.com/mathphysics.html">More applets.</a>
<p>
<a href="circuit.zip">Zip archive of this applet.</a> (double-click on circuit.jar to run)
<p>
<a href="src.zip">The source.</a>
<p>
Version 1.5n, posted 12/7/10<br>
<p>
Thanks to <a href="http://www.wfu.edu/~rollins">J. Mike Rollins</a> for the Zener diode code.  Thanks to Julius Schmidt for the spark gap code and some examples.  Thanks to Dustin Soodak for help with the user interface improvements.
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<a href="http://www.icircuitapp.com/"><img src="/icircuit.gif"></a>
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